I am trying to have a bluetooth bond between the device and the app,
how to set a security key to bond it with the android app? and also can I know how to encrypt all the data that are to be sent through this device?
I am trying to have a bluetooth bond between the device and the app,
how to set a security key to bond it with the android app? and also can I know how to encrypt all the data that are to be sent through this device?
Hello,
Most of our SDK BLE examples are already configured to support the pairing and bonding, which both are BT defined procedures to exchange encryption keys. You may for instance try the Glucose Application example with our nRF connect app on Android.
Hello,
Most of our SDK BLE examples are already configured to support the pairing and bonding, which both are BT defined procedures to exchange encryption keys. You may for instance try the Glucose Application example with our nRF connect app on Android.
Hi,
As per the link you sent, I referred to it.
I hence checked out the given example:
But I get an error in this code after I added it to my program :
Below attached my code for your reference:
/**
* Copyright (c) 2014 - 2018, Nordic Semiconductor ASA
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/** @file
* Peripheral: SAADC
* Compatibility: nRF52832 rev 2/nRF52840 rev 1, SDK 15.2.0
* Softdevice used: S132 v6.1.0/S140 v6.1.0
*
* This SAADC example samples on 4 different input pins, and enables scan mode to do that. It is otherwise an
* offsprint from the standard ble_app_uart example available in nRF5 SDK 15.2.0
* Works together with softdevice S132 v6.1.0 on nRF52832 and S140 v6.1.0 on nRF52840
* Transmits SAADC output to hardware UART and over BLE via Nordic UART Servive (NUS).
* Info on NUS -> http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v13.0.0/ble_sdk_app_nus_eval.html?cp=4_0_0_4_1_2_17
* Info on hardware UART settings -> http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v13.0.0/uart_example.html?cp=4_0_0_4_4_41
*/
#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "ble_hci.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "app_timer.h"
#include "ble_nus.h"
#include "app_uart.h"
#include "app_util_platform.h"
#include "bsp_btn_ble.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_drv_saadc.h"
#include "nrf_drv_ppi.h"
#include "nrf_drv_timer.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#include "nrf_drv_twi.h"
#include "nrf_delay.h"
#include "app_pwm.h"
#include "nrf_calendar.h"
#if defined (UART_PRESENT)
#include "nrf_uart.h"
#endif
#if defined (UARTE_PRESENT)
#include "nrf_uarte.h"
#endif
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define DEVICE_NAME "IEDC_BRD2" /**< Name of device. Will be included in the advertising data. */
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /**< UUID type for the Nordic UART Service (vendor specific). */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define APP_ADV_INTERVAL 64 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
#define APP_ADV_DURATION 18000 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(20, UNIT_1_25_MS) /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(75, UNIT_1_25_MS) /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */
#define SLAVE_LATENCY 0 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */
#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */
#define SAADC_SAMPLES_IN_BUFFER 4
#define SAADC_SAMPLE_RATE 250 /**< SAADC sample rate in ms. */
#define BRD_LED1 8
#define BRD_LED2 11
#define BRD_LED3 12
#define BRD_LED4 14
#define MOT_CTL 7
#define BAT_STATE 6
#define KEY_PIN 30
#define SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 1 /**< Man In The Middle protection required (applicable when display module is detected). */
#define SEC_PARAM_LESC 1 /**< LE Secure Connections enabled. */
#define SEC_PARAM_KEYPRESS 0 /**< Keypress notifications not enabled. */
#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_DISPLAY_ONLY /**< Display I/O capabilities. */
#define SEC_PARAM_OOB 0 /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE 7 /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size. */
#define PASSKEY_TXT "Passkey:" /**< Message to be displayed together with the pass-key. */
#define PASSKEY_TXT_LENGTH 8 /**< Length of message to be displayed together with the pass-key. */
#define PASSKEY_LENGTH 6 /**< Length of pass-key received by the stack for display. */
static pm_peer_id_t m_peer_to_be_deleted = PM_PEER_ID_INVALID;
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
static void pm_evt_handler(pm_evt_t const * p_evt)
{
ret_code_t err_code;
pm_handler_on_pm_evt(p_evt);
pm_handler_disconnect_on_sec_failure(p_evt);
pm_handler_flash_clean(p_evt);
switch (p_evt->evt_id)
{
case PM_EVT_CONN_SEC_SUCCEEDED:
{
pm_conn_sec_status_t conn_sec_status;
// Check if the link is authenticated (meaning at least MITM).
err_code = pm_conn_sec_status_get(p_evt->conn_handle, &conn_sec_status);
APP_ERROR_CHECK(err_code);
if (conn_sec_status.mitm_protected)
{
NRF_LOG_INFO("Link secured. Role: %d. conn_handle: %d, Procedure: %d",
ble_conn_state_role(p_evt->conn_handle),
p_evt->conn_handle,
p_evt->params.conn_sec_succeeded.procedure);
}
else
{
// The peer did not use MITM, disconnect.
NRF_LOG_INFO("Collector did not use MITM, disconnecting");
err_code = pm_peer_id_get(m_conn_handle, &m_peer_to_be_deleted);
APP_ERROR_CHECK(err_code);
err_code = sd_ble_gap_disconnect(m_conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
}
} break;
case PM_EVT_CONN_SEC_FAILED:
m_conn_handle = BLE_CONN_HANDLE_INVALID;
break;
case PM_EVT_PEERS_DELETE_SUCCEEDED:
advertising_start(false);
break;
default:
break;
}
}
typedef struct
{
int16_t z;
int16_t y;
int16_t x;
}accel_values_t;
BLE_NUS_DEF(m_nus, NRF_SDH_BLE_TOTAL_LINK_COUNT); /**< BLE NUS service instance. */
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
NRF_BLE_QWR_DEF(m_qwr); /*< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising); /**< Advertising module instance. */
/**< Handle of the current connection. */
static uint16_t m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - 3; /**< Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */
static ble_uuid_t m_adv_uuids[] = /**< Universally unique service identifier. */
{
{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}
};
static dc = 50;
static kk = 0;
static button = 0;
volatile uint8_t state = 1;
volatile uint16_t Battery_voltage,Battery_current,FSR_voltage;
#define TIMER_INTERVAL_ACCEL_UPDATE APP_TIMER_TICKS(5000) // 2000 ms intervals
volatile bool start_accel_update_flag = false;
APP_TIMER_DEF(m_timer_accel_update_id);
#define TIMER_INTERVAL_ADC_UPDATE APP_TIMER_TICKS(3000) // 3000 ms intervals
volatile bool start_adc_update_flag = false;
APP_TIMER_DEF(m_timer_adc_update_id);
#define TIMER_INTERVAL_PWM_UPDATE APP_TIMER_TICKS(500) // 500 ms intervals
APP_TIMER_DEF(m_timer_pwm_update_id);
volatile bool start_pwm_update_flag = false;
volatile bool bat_low = 0,charge=0,vibrate_on = 0;
volatile uint16_t Vibrate_value , Temp_value ,Vibrate_value2;
#ifdef NRF52810_XXAA
static const nrf_drv_timer_t m_timer = NRF_DRV_TIMER_INSTANCE(2);
#else
static const nrf_drv_timer_t m_timer = NRF_DRV_TIMER_INSTANCE(3);
#endif
static nrf_saadc_value_t m_buffer_pool[2][SAADC_SAMPLES_IN_BUFFER];
static nrf_ppi_channel_t m_ppi_channel;
static uint32_t m_adc_evt_counter;
volatile uint32_t vibrate_count;
volatile uint32_t right;
volatile uint32_t left;
static bool bl_command=0;
static uint8_t bluetooth_command[4];
static uint8_t accel_values_array[6];
/* TWI instance ID. */
#define TWI_INSTANCE_ID 0
/* Common addresses definition for sensor. */
#define ICM20948_ADDR 0x68 //(0x90U >> 1)
#define MPU_REG_ACCEL_XOUT_H 0x2D
/* Indicates if operation on TWI has ended. */
static volatile bool m_xfer_done = false;
/* TWI instance. */
static const nrf_drv_twi_t m_twi = NRF_DRV_TWI_INSTANCE(TWI_INSTANCE_ID);
extern void Convert_to_ascii(uint16_t num,uint8_t *num_array,uint8_t n);
extern void Convert_Ascii_array_to_int(uint8_t *ascii_array, uint8_t c);
/* Buffer for samples read from sensor. */
static uint8_t m_sample;
APP_PWM_INSTANCE(PWM1,1); // Create the instance "PWM1" using TIMER1.
static volatile bool ready_flag; // A flag indicating PWM status.
void pwm_ready_callback(uint32_t pwm_id) // PWM callback function
{
ready_flag = true;
}
/**@brief Function for assert macro callback.
*
* @details This function will be called in case of an assert in the SoftDevice.
*
* @warning This handler is an example only and does not fit a final product. You need to analyse
* how your product is supposed to react in case of Assert.
* @warning On assert from the SoftDevice, the system can only recover on reset.
*
* @param[in] line_num Line number of the failing ASSERT call.
* @param[in] p_file_name File name of the failing ASSERT call.
*/
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
app_error_handler(DEAD_BEEF, line_num, p_file_name);
}
void timer_accel_update_handler(void * p_context)
{
start_accel_update_flag = true;
}
void timer_adc_update_handler(void * p_context)
{
start_adc_update_flag = true;
}
void timer_pwm_update_handler(void * p_context)
{
start_pwm_update_flag = true;
}
/**@brief Function for initializing the timer module.
*/
static void timers_init(void)
{
ret_code_t err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
err_code = app_timer_create(&m_timer_accel_update_id, APP_TIMER_MODE_REPEATED, timer_accel_update_handler);
APP_ERROR_CHECK(err_code);
err_code = app_timer_create(&m_timer_adc_update_id, APP_TIMER_MODE_REPEATED, timer_adc_update_handler);
APP_ERROR_CHECK(err_code);
err_code = app_timer_create(&m_timer_pwm_update_id, APP_TIMER_MODE_REPEATED, timer_pwm_update_handler);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for the GAP initialization.
*
* @details This function will set up all the necessary GAP (Generic Access Profile) parameters of
* the device. It also sets the permissions and appearance.
*/
static void gap_params_init(void)
{
uint32_t err_code;
ble_gap_conn_params_t gap_conn_params;
ble_gap_conn_sec_mode_t sec_mode;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
err_code = sd_ble_gap_device_name_set(&sec_mode,
(const uint8_t *) DEVICE_NAME,
strlen(DEVICE_NAME));
APP_ERROR_CHECK(err_code);
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling Queued Write Module errors.
*
* @details A pointer to this function will be passed to each service which may need to inform the
* application about an error.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for handling the data from the Nordic UART Service.
*
* @details This function will process the data received from the Nordic UART BLE Service and send
* it to the UART module.
*
* @param[in] p_evt Nordic UART Service event.
*/
/**@snippet [Handling the data received over BLE] */
static volatile bool send_time_update = false;
static void nus_data_handler(ble_nus_evt_t * p_evt)
{
NRF_LOG_INFO("BLINKY START\n");
uint8_t vib_cnt_buf[5],vibrate_count_array[3],vvv[3];
ret_code_t err_code;
uint16_t length = 8,i=0,len1=2,len2=6,ha = 3,lendt = 16;
uint8_t message1[]= "OK" ;
uint8_t message2[]= "NOT OK" ;
if (p_evt->type == BLE_NUS_EVT_RX_DATA)
{
uint32_t err_code;
if (p_evt->params.rx_data.p_data[0]=='O')
{ button = 1;
}
if(p_evt->params.rx_data.p_data[0] == 'T')
{
send_time_update = true;
}
//----------------------------higher and lower threshold--------------------------------------
if (p_evt->params.rx_data.p_data[0]=='L')
{
memcpy(&vvv[0], (&p_evt->params.rx_data.p_data[1]),3);
Convert_Ascii_array_to_int(&vvv[0],3);
Vibrate_value2 = Temp_value;
}
if (p_evt->params.rx_data.p_data[0]=='H')
{
memcpy(&vvv[0], (&p_evt->params.rx_data.p_data[1]),3);
Convert_Ascii_array_to_int(&vvv[0],3);
Vibrate_value = Temp_value;
Convert_to_ascii(Temp_value,(&vib_cnt_buf[0]),3);
}
//-------------------------------------------------------------------------------------------------
//-------------------------leg??-----------------------------------------------
if ((p_evt->params.rx_data.p_data[0]=='l')&&(p_evt->params.rx_data.p_data[1]=='e')&&(p_evt->params.rx_data.p_data[2]=='g'))
{
if(p_evt->params.rx_data.p_data[3]=='L')
kk = 1;
else
kk = 0;
}
//---------------------------------------------
if(p_evt->params.rx_data.p_data[0]=='P')
{
memcpy(&vvv[0], (&p_evt->params.rx_data.p_data[1]),3);
Convert_Ascii_array_to_int(&vvv[0],3);
dc = Temp_value;
}
if((p_evt->params.rx_data.p_data[0]=='a')&&(p_evt->params.rx_data.p_data[1]=='a'))
{
bl_command = 1;
if (kk == 0)
{
Convert_to_ascii(right,(&vib_cnt_buf[0]),8);
Convert_to_ascii(left,(&vib_cnt_buf[2]),2);
//err_code = ble_nus_data_send(&m_nus, (&vib_cnt_buf[0]), &length, m_conn_handle);
err_code = ble_nus_data_send(&m_nus, (&vib_cnt_buf), &length, m_conn_handle);
}
else
{
Convert_to_ascii(right,(&vib_cnt_buf[0]),8);
Convert_to_ascii(left,(&vib_cnt_buf[2]),2);
//err_code = ble_nus_data_send(&m_nus, (&vib_cnt_buf[0]), &length, m_conn_handle);
err_code = ble_nus_data_send(&m_nus, (&vib_cnt_buf), &length, m_conn_handle);
}
}
else if((p_evt->params.rx_data.p_data[0]=='*')&&(p_evt->params.rx_data.p_data[1]=='*'))
{
// for(i=0;i<3;i++)
// vibrate_count_array[i] = p_evt->params.rx_data.p_data[1+i];
memcpy(&vibrate_count_array[0], (&p_evt->params.rx_data.p_data[2]),3);
Convert_Ascii_array_to_int(&vibrate_count_array[0],3);
if((Temp_value > 150 ) & (Temp_value < 999 ))
{
Vibrate_value = Temp_value ;
err_code = ble_nus_data_send(&m_nus, message1, &len1, m_conn_handle);
}
else
{
err_code = ble_nus_data_send(&m_nus, message2, &len2, m_conn_handle);
}
}
else if((p_evt->params.rx_data.p_data[0]=='&')&&(p_evt->params.rx_data.p_data[1]=='&'))
{
// for(i=0;i<3;i++)
// vibrate_count_array[i] = p_evt->params.rx_data.p_data[1+i];
memcpy(&vibrate_count_array[0], (&p_evt->params.rx_data.p_data[2]),3);
Convert_Ascii_array_to_int(&vibrate_count_array[0],3);
if((Temp_value > 50 ) & (Temp_value < 150 ))
{
Vibrate_value2 = Temp_value ;
err_code = ble_nus_data_send(&m_nus, message1, &len1, m_conn_handle);
}
else
{
err_code = ble_nus_data_send(&m_nus, message2, &len2, m_conn_handle);
}
}
}
}
/**@snippet [Handling the data received over BLE] */
/**@brief Function for initializing services that will be used by the application.
*/
static void services_init(void)
{
uint32_t err_code;
ble_nus_init_t nus_init;
nrf_ble_qwr_init_t qwr_init = {0};
// Initialize Queued Write Module.
qwr_init.error_handler = nrf_qwr_error_handler;
err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
APP_ERROR_CHECK(err_code);
// Initialize NUS.
memset(&nus_init, 0, sizeof(nus_init));
nus_init.data_handler = nus_data_handler;
err_code = ble_nus_init(&m_nus, &nus_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling an event from the Connection Parameters Module.
*
* @details This function will be called for all events in the Connection Parameters Module
* which are passed to the application.
*
* @note All this function does is to disconnect. This could have been done by simply setting
* the disconnect_on_fail config parameter, but instead we use the event handler
* mechanism to demonstrate its use.
*
* @param[in] p_evt Event received from the Connection Parameters Module.
*/
static void peer_manager_init(void)
{
ble_gap_sec_params_t sec_param;
ret_code_t err_code;
err_code = pm_init();
APP_ERROR_CHECK(err_code);
memset(&sec_param, 0, sizeof(ble_gap_sec_params_t));
// Security parameters to be used for all security procedures.
sec_param.bond = SEC_PARAM_BOND;
sec_param.mitm = SEC_PARAM_MITM;
sec_param.lesc = SEC_PARAM_LESC;
sec_param.keypress = SEC_PARAM_KEYPRESS;
sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES;
sec_param.oob = SEC_PARAM_OOB;
sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
sec_param.kdist_own.enc = 1;
sec_param.kdist_own.id = 1;
sec_param.kdist_peer.enc = 1;
sec_param.kdist_peer.id = 1;
err_code = pm_sec_params_set(&sec_param);
APP_ERROR_CHECK(err_code);
err_code = pm_register(pm_evt_handler);
APP_ERROR_CHECK(err_code);
}
/**@brief Clear bond information from persistent storage.
*/
static void delete_bonds(void)
{
ret_code_t err_code;
NRF_LOG_INFO("Erase bonds!");
err_code = pm_peers_delete();
APP_ERROR_CHECK(err_code);
}
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
{
uint32_t err_code;
if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
{
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
APP_ERROR_CHECK(err_code);
}
}
/**@brief Function for handling errors from the Connection Parameters module.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void conn_params_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for initializing the Connection Parameters module.
*/
static void conn_params_init(void)
{
uint32_t err_code;
ble_conn_params_init_t cp_init;
memset(&cp_init, 0, sizeof(cp_init));
cp_init.p_conn_params = NULL;
cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
cp_init.disconnect_on_fail = false;
cp_init.evt_handler = on_conn_params_evt;
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for putting the chip into sleep mode.
*
* @note This function will not return.
*/
static void sleep_mode_enter(void)
{
uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
APP_ERROR_CHECK(err_code);
// Prepare wakeup buttons.
err_code = bsp_btn_ble_sleep_mode_prepare();
APP_ERROR_CHECK(err_code);
// Go to system-off mode (this function will not return; wakeup will cause a reset).
err_code = sd_power_system_off();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling advertising events.
*
* @details This function will be called for advertising events which are passed to the application.
*
* @param[in] ble_adv_evt Advertising event.
*/
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
uint32_t err_code;
switch (ble_adv_evt)
{
case BLE_ADV_EVT_FAST:
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_IDLE:
// sleep_mode_enter();
break;
default:
break;
}
}
/**@brief Function for handling BLE events.
*
* @param[in] p_ble_evt Bluetooth stack event.
* @param[in] p_context Unused.
*/
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
uint32_t err_code;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Connected");
//err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
//APP_ERROR_CHECK(err_code);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected");
// LED indication will be changed when advertising starts.
m_conn_handle = BLE_CONN_HANDLE_INVALID;
break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_AUTO,
.tx_phys = BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
// Pairing not supported
err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_SYS_ATTR_MISSING:
// No system attributes have been stored.
err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_TIMEOUT:
// Disconnect on GATT Server timeout event.
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for the SoftDevice initialization.
*
* @details This function initializes the SoftDevice and the BLE event interrupt.
*/
static void ble_stack_init(void)
{
ret_code_t err_code;
err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);
// Configure the BLE stack using the default settings.
// Fetch the start address of the application RAM.
uint32_t ram_start = 0;
err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
APP_ERROR_CHECK(err_code);
// Enable BLE stack.
err_code = nrf_sdh_ble_enable(&ram_start);
APP_ERROR_CHECK(err_code);
// Register a handler for BLE events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}
/**@brief Function for handling events from the GATT library. */
void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
{
if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED))
{
m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
NRF_LOG_INFO("Data len is set to 0x%X(%d)", m_ble_nus_max_data_len, m_ble_nus_max_data_len);
}
NRF_LOG_DEBUG("ATT MTU exchange completed. central 0x%x peripheral 0x%x",
p_gatt->att_mtu_desired_central,
p_gatt->att_mtu_desired_periph);
}
/**@brief Function for initializing the GATT library. */
void gatt_init(void)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated by button press.
*/
void bsp_event_handler(bsp_event_t event)
{
uint32_t err_code;
switch (event)
{
case BSP_EVENT_SLEEP:
sleep_mode_enter();
break;
case BSP_EVENT_DISCONNECT:
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
break;
case BSP_EVENT_WHITELIST_OFF:
if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
{
err_code = ble_advertising_restart_without_whitelist(&m_advertising);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
}
break;
default:
break;
}
}
/**@brief Function for handling app_uart events.
*
* @details This function will receive a single character from the app_uart module and append it to
* a string. The string will be be sent over BLE when the last character received was a
* 'new line' '\n' (hex 0x0A) or if the string has reached the maximum data length.
*/
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event)
{
static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
static uint8_t index = 0;
uint32_t err_code;
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
index++;
if ((data_array[index - 1] == '\n') ||
(data_array[index - 1] == '\r') ||
(index >= m_ble_nus_max_data_len))
{
if (index > 1)
{
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(data_array, index);
do
{
uint16_t length = (uint16_t)index;
err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
if ((err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_NOT_FOUND))
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_RESOURCES);
}
index = 0;
}
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
/**@snippet [Handling the data received over UART] */
/**@brief Function for initializing the UART module.
*/
/**@snippet [UART Initialization] */
static void uart_init(void)
{
uint32_t err_code;
app_uart_comm_params_t const comm_params =
{
.rx_pin_no = RX_PIN_NUMBER,
.tx_pin_no = TX_PIN_NUMBER,
.rts_pin_no = RTS_PIN_NUMBER,
.cts_pin_no = CTS_PIN_NUMBER,
.flow_control = APP_UART_FLOW_CONTROL_DISABLED,
.use_parity = false,
#if defined (UART_PRESENT)
.baud_rate = NRF_UART_BAUDRATE_115200
#else
.baud_rate = NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
/**@snippet [UART Initialization] */
/**@brief Function for initializing the Advertising functionality.
*/
static void advertising_init(void)
{
uint32_t err_code;
ble_advertising_init_t init;
memset(&init, 0, sizeof(init));
init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
init.advdata.include_appearance = false;
init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
init.srdata.uuids_complete.p_uuids = m_adv_uuids;
init.config.ble_adv_fast_enabled = true;
init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
init.evt_handler = on_adv_evt;
err_code = ble_advertising_init(&m_advertising, &init);
APP_ERROR_CHECK(err_code);
ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}
/**@brief Function for initializing buttons and leds.
*
* @param[out] p_erase_bonds Will be true if the clear bonding button was pressed to wake the application up.
*/
static void buttons_leds_init(bool * p_erase_bonds)
{
bsp_event_t startup_event;
uint32_t err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
*p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}
/**@brief Function for initializing the nrf log module.
*/
static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
/**@brief Function for initializing power management.
*/
static void power_management_init(void)
{
ret_code_t err_code;
err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling the idle state (main loop).
*
* @details If there is no pending log operation, then sleep until next the next event occurs.
*/
static void idle_state_handle(void)
{
UNUSED_RETURN_VALUE(NRF_LOG_PROCESS());
nrf_pwr_mgmt_run();
}
/**@brief Function for starting advertising.
*/
static void advertising_start(bool erase_bonds)
{
if (erase_bonds == true)
{
delete_bonds();
// Advertising is started by PM_EVT_PEERS_DELETE_SUCCEEDED event.
}
else
{
ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
}
}
//////////////////////////////////////////////////////
uint32_t bluetooth_sleep(void)
{
uint32_t err_code;
// If connected, disconnect
if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
{
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_SUCCESS) return err_code;
}
// Stop advertising
err_code = sd_ble_gap_adv_stop(m_advertising.adv_handle);
if (err_code != NRF_SUCCESS) return err_code;
// Disable the radio tasks as scytulip suggested
// devzone.nordicsemi.com/.../
NRF_RADIO->TASKS_DISABLE;
return NRF_SUCCESS;
}
/////////////////////////////////////////////////////////////////////
extern void Convert_to_ascii(uint16_t num,uint8_t *num_array,uint8_t n)
{
uint8_t _i;
_i = n;
// _i = 0;
do{
_i-- ;
num_array[_i] = (num % 10)+'0';
num /= 10 ;
// _i++;
}while(_i != 0);
}
extern void Convert_Ascii_array_to_int(uint8_t *ascii_array, uint8_t c)
{
uint16_t value=0;
uint8_t i,hex;
uint16_t mf = 1;
i = c;
do{
i--;
hex = ascii_array[i]-'0';
value = value + hex*mf ;
mf = mf*10 ;
}while(i != 0);
//return(value);
Temp_value = value ;
}
void timer_handler(nrf_timer_event_t event_type, void* p_context)
{
}
void saadc_sampling_event_init(void)
{
ret_code_t err_code;
err_code = nrf_drv_ppi_init();
APP_ERROR_CHECK(err_code);
nrf_drv_timer_config_t timer_config = NRF_DRV_TIMER_DEFAULT_CONFIG;
timer_config.frequency = NRF_TIMER_FREQ_31250Hz;
err_code = nrf_drv_timer_init(&m_timer, &timer_config, timer_handler);
APP_ERROR_CHECK(err_code);
/* setup m_timer for compare event */
uint32_t ticks = nrf_drv_timer_ms_to_ticks(&m_timer,SAADC_SAMPLE_RATE);
nrf_drv_timer_extended_compare(&m_timer, NRF_TIMER_CC_CHANNEL0, ticks, NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, false);
nrf_drv_timer_enable(&m_timer);
uint32_t timer_compare_event_addr = nrf_drv_timer_compare_event_address_get(&m_timer, NRF_TIMER_CC_CHANNEL0);
uint32_t saadc_sample_event_addr = nrf_drv_saadc_sample_task_get();
/* setup ppi channel so that timer compare event is triggering sample task in SAADC */
err_code = nrf_drv_ppi_channel_alloc(&m_ppi_channel);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_ppi_channel_assign(m_ppi_channel, timer_compare_event_addr, saadc_sample_event_addr);
APP_ERROR_CHECK(err_code);
}
void saadc_sampling_event_enable(void)
{
ret_code_t err_code = nrf_drv_ppi_channel_enable(m_ppi_channel);
APP_ERROR_CHECK(err_code);
}
void saadc_callback(nrf_drv_saadc_evt_t const * p_event)
{
if (p_event->type == NRF_DRV_SAADC_EVT_DONE)
{
ret_code_t err_code;
uint16_t adc_value,mV;
float mV_value_digit;
uint8_t value[SAADC_SAMPLES_IN_BUFFER*2];
uint16_t bytes_to_send;
uint8_t mV_values[20] = {" , , , "};
uint16_t send_bytes = 20;
// set buffers
err_code = nrf_drv_saadc_buffer_convert(p_event->data.done.p_buffer, SAADC_SAMPLES_IN_BUFFER);
APP_ERROR_CHECK(err_code);
// print samples on hardware UART and parse data for BLE transmission
// printf("ADC event number: %d\r\n",(int)m_adc_evt_counter);
for (int i = 0; i < SAADC_SAMPLES_IN_BUFFER; i++)
{
// printf("%d\r\n", p_event->data.done.p_buffer[i]);
adc_value = p_event->data.done.p_buffer[i];
if(adc_value > 4096)
adc_value = 0;
mV_value_digit = adc_value ;
switch(i)
{
case 0:
mV_value_digit = mV_value_digit * 1.75 ;
Battery_voltage = mV_value_digit;
break;
case 1:
mV_value_digit = mV_value_digit * 0.88 ;
Battery_current = mV_value_digit;
break;
case 3:
mV_value_digit = mV_value_digit * 0.88 ;
FSR_voltage = mV_value_digit;
break;
}
// mV_value_digit = mV_value_digit / 4096 ;
// mV_value_digit = mV_value_digit/ 1000 ;
mV = mV_value_digit ;
Convert_to_ascii(mV,(&mV_values[i*5]),4);
value[i*2] = adc_value;
value[(i*2)+1] = adc_value >> 8;
}
// Send data over BLE via NUS service. Makes sure not to send more than 20 bytes.
if((SAADC_SAMPLES_IN_BUFFER*2) <= 20)
{
bytes_to_send = (SAADC_SAMPLES_IN_BUFFER*2);
}
else
{
bytes_to_send = 20;
}
// err_code = ble_nus_data_send(&m_nus, value, &bytes_to_send, m_conn_handle);
/* err_code = ble_nus_data_send(&m_nus, (&mV_values[0]), &send_bytes, m_conn_handle);
if ((err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_NOT_FOUND))
{
APP_ERROR_CHECK(err_code);
}*/
m_adc_evt_counter++;
}
}
void saadc_init(void)
{
ret_code_t err_code;
nrf_drv_saadc_config_t saadc_config = NRF_DRV_SAADC_DEFAULT_CONFIG;
saadc_config.resolution = NRF_SAADC_RESOLUTION_12BIT;
nrf_saadc_channel_config_t channel_0_config =
NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN2);
channel_0_config.gain = NRF_SAADC_GAIN1_6;
channel_0_config.reference = NRF_SAADC_REFERENCE_INTERNAL;
nrf_saadc_channel_config_t channel_1_config =
NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN3);
channel_1_config.gain = NRF_SAADC_GAIN1_6;
channel_1_config.reference = NRF_SAADC_REFERENCE_INTERNAL;
nrf_saadc_channel_config_t channel_2_config =
NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN4);
channel_2_config.gain = NRF_SAADC_GAIN1_6;
channel_2_config.reference = NRF_SAADC_REFERENCE_INTERNAL;
nrf_saadc_channel_config_t channel_3_config =
NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN5);
channel_3_config.gain = NRF_SAADC_GAIN1_6;
channel_3_config.reference = NRF_SAADC_REFERENCE_INTERNAL;
err_code = nrf_drv_saadc_init(&saadc_config, saadc_callback);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_channel_init(0, &channel_0_config);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_channel_init(1, &channel_1_config);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_channel_init(2, &channel_2_config);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_channel_init(3, &channel_3_config);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_buffer_convert(m_buffer_pool[0],SAADC_SAMPLES_IN_BUFFER);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_buffer_convert(m_buffer_pool[1],SAADC_SAMPLES_IN_BUFFER);
APP_ERROR_CHECK(err_code);
}
/**
* @brief Function for handling data from temperature sensor.
*
* @param[in] temp Temperature in Celsius degrees read from sensor.
*/
__STATIC_INLINE void data_handler(uint8_t temp)
{
//NRF_LOG_INFO("Temperature: %d Celsius degrees.", temp);
}
/**
* @brief TWI events handler.
*/
void twi_handler(nrf_drv_twi_evt_t const * p_event, void * p_context)
{
switch (p_event->type)
{
case NRF_DRV_TWI_EVT_DONE:
if (p_event->xfer_desc.type == NRF_DRV_TWI_XFER_RX)
{
data_handler(m_sample);
}
m_xfer_done = true;
break;
default:
break;
}
}
/**
* @brief twi initialization.
*/
void twi_init (void)
{
ret_code_t err_code;
const nrf_drv_twi_config_t twi_ICM20948_config = {
.scl = ARDUINO_SCL_PIN,
.sda = ARDUINO_SDA_PIN,
.frequency = NRF_DRV_TWI_FREQ_100K,
.interrupt_priority = APP_IRQ_PRIORITY_HIGH,
.clear_bus_init = false
};
err_code = nrf_drv_twi_init(&m_twi, &twi_ICM20948_config, twi_handler, NULL);
APP_ERROR_CHECK(err_code);
nrf_drv_twi_enable(&m_twi);
}
static void application_timers_start(void)
{
uint32_t err_code;
//uint32_t err_code = app_timer_start(m_timer_accel_update_id, TIMER_INTERVAL_ACCEL_UPDATE, NULL);
//APP_ERROR_CHECK(err_code);
err_code = app_timer_start(m_timer_adc_update_id, TIMER_INTERVAL_ACCEL_UPDATE, NULL);
APP_ERROR_CHECK(err_code);
}
void Port_init(void)
{
nrf_gpio_cfg_output(BRD_LED1);
nrf_gpio_cfg_output(BRD_LED2);
nrf_gpio_cfg_output(BRD_LED3);
// nrf_gpio_cfg_output(BRD_LED4);
// nrf_gpio_cfg_output(MOT_CTL);
/* nrf_gpio_pin_set(BRD_LED1);
nrf_gpio_pin_set(BRD_LED2);
nrf_gpio_pin_set(BRD_LED3);
nrf_gpio_pin_set(BRD_LED4);*/
// nrf_gpio_pin_clear(MOT_CTL);
nrf_gpio_cfg_input(BAT_STATE, BUTTON_PULL);
nrf_gpio_cfg_input(KEY_PIN, BUTTON_PULL);
}
void ICM20948_set_mode(void)
{
ret_code_t err_code;
/* Writing to LM75B_REG_CONF "0" set temperature sensor in NORMAL mode. */
uint8_t reg[2] = {0x6, 00};
err_code = nrf_drv_twi_tx(&m_twi, ICM20948_ADDR, reg, sizeof(reg), false);
APP_ERROR_CHECK(err_code);
while (m_xfer_done == false);
/* Writing to pointer byte. */
// reg[0] = LM75B_REG_TEMP;
// m_xfer_done = false;
// err_code = nrf_drv_twi_tx(&m_twi, MPU_ADDR, reg, 1, false);
// APP_ERROR_CHECK(err_code);
// while (m_xfer_done == false);
}
uint32_t app_mpu_read_accel(accel_values_t * accel_values)
{
uint32_t err_code;
uint8_t raw_values[6];
uint8_t *data;
uint8_t reg = 0x2D;
// err_code = nrf_drv_mpu_read_registers(MPU_REG_ACCEL_XOUT_H, raw_values, 6);
// if(err_code != NRF_SUCCESS) return err_code;
err_code = nrf_drv_twi_tx(&m_twi, ICM20948_ADDR, ®, 1, false);
// APP_ERROR_CHECK(err_code);
while (m_xfer_done == false);
m_xfer_done = false;
nrf_delay_ms(100);
err_code = nrf_drv_twi_rx(&m_twi, ICM20948_ADDR,( &raw_values[0]), 7);
memcpy(accel_values_array,raw_values,6);
/* data = (uint8_t*)accel_values;
for(uint8_t i = 0; i<6; i++)
{
*data = raw_values[5-i];
accel_values_array[i] = raw_values[i] ;
data++;
}*/
return NRF_SUCCESS;
}
void pwm_init(void)
{
ret_code_t err_code;
app_pwm_config_t pwm1_cfg = APP_PWM_DEFAULT_CONFIG_1CH(1000L,MOT_CTL );
pwm1_cfg.pin_polarity[0] = APP_PWM_POLARITY_ACTIVE_HIGH;
/* Initialize and enable PWM. */
err_code = app_pwm_init(&PWM1,&pwm1_cfg,pwm_ready_callback);
APP_ERROR_CHECK(err_code);
app_pwm_enable(&PWM1);
}
/**@brief Application main function.
*/
int main(void)
{
APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
NRF_LOG_DEFAULT_BACKENDS_INIT();
//NRF_LOG_INFO("BSP example started.");
//NRF_LOG_FLUSH();
bool erase_bonds;
bool pwm_on;
uint16_t send_bytes= 4;
uint8_t message[] = {"Hello"};
uint8_t vib_cnt_buf[5];
ret_code_t err_code;
accel_values_t accel_values;
Vibrate_value = 800;
Vibrate_value2 = 80;
// Initialize.
// uart_init();
// log_init();
timers_init();
buttons_leds_init(&erase_bonds);
Port_init();
power_management_init();
ble_stack_init();
gap_params_init();
gatt_init();
services_init();
advertising_init();
conn_params_init();
peer_manager_init();
saadc_sampling_event_init();
saadc_init();
saadc_sampling_event_enable();
twi_init();
nrf_gpio_pin_clear(BRD_LED3);
nrf_gpio_pin_clear(BRD_LED1);
pwm_init();
application_timers_start();
advertising_start(erase_bonds);
// ICM20948_set_mode();
nrf_cal_set_time(2020, 7, 20, 12, 30, 0);
nrf_delay_ms(1000);
// Enter main loop.
for (;;)
{
if(button == 1) {
uint32_t h = bluetooth_sleep();}
//////////////////////////
if(send_time_update)
{
char *time_string;
uint16_t length;
send_time_update = false;
time_string = nrf_cal_get_time_string(true);
length = strlen(time_string);
uint32_t err_code = ble_nus_data_send(&m_nus, time_string, &length, m_conn_handle);
APP_ERROR_CHECK(err_code);
}
//////////////
if((FSR_voltage >= Vibrate_value) | (FSR_voltage < Vibrate_value2))
{
if(vibrate_on != 1)
{
vibrate_on = 1;
nrf_delay_ms(1000);
err_code = app_timer_start(m_timer_pwm_update_id, TIMER_INTERVAL_PWM_UPDATE, NULL);
//APP_ERROR_CHECK(err_code);
pwm_on = 1;
app_pwm_enable(&PWM1);
while (app_pwm_channel_duty_set(&PWM1, 0, dc) == NRF_ERROR_BUSY);
if(FSR_voltage >= Vibrate_value)
{
if (kk==0)
right++;
else
left++;
}
else if(FSR_voltage < Vibrate_value2)
{
if (kk==0)
left++;
else
right++;
}
}
}
else
{
if(vibrate_on == 1)
{
vibrate_on = 0 ;
app_pwm_disable(&PWM1);
err_code = app_timer_stop(m_timer_pwm_update_id);
}
}
if(vibrate_on == 1)
{
if(start_pwm_update_flag == 1)
{
if(pwm_on == 1)
{
pwm_on = 0;
app_pwm_disable(&PWM1);
}
else
{
pwm_on = 1;
app_pwm_enable(&PWM1);
while (app_pwm_channel_duty_set(&PWM1, 0, dc) == NRF_ERROR_BUSY);
}
start_pwm_update_flag = 0;
}
}
if(start_adc_update_flag == true){
if(nrf_gpio_pin_read(BAT_STATE)){
nrf_gpio_pin_clear(BRD_LED3);
charge = 0;
if(Battery_voltage < 3300)
{
if(bat_low != 1)
{
bat_low = 1 ;
nrf_gpio_pin_set(BRD_LED1);
}
}
else{
if(bat_low == 1)
{
bat_low = 0 ;
nrf_gpio_pin_clear(BRD_LED1);
}
}
}
else{
if(charge != 1){
charge = 1;
nrf_gpio_pin_clear(BRD_LED1);
nrf_gpio_pin_set(BRD_LED3);
}
}
start_adc_update_flag = false;
}
}
}
/**
* @}
*/
Hi, can you please help me out with this error that i get
